Hagerman Audio Labs "Tuba" Parafeed Headphone Amp - Review

Wish I could but its a shamless cut and paste from out there on the net!

:grinning:

My very short impressions of the Tuba.
I picked one up out of interest about a month ago.
I’ve been trying to figure out what equipment I want in my somewhat constrained secondary listening environment. So I spent several weeks just listening to my new ZMF Eikon’s on my various amplifier options out of a Bifrost2.
For point of reference I was largely comparing it to a newer Jotenheim, a ZDT Jr, a DIY Whammy and a Liquid Platinum hybrid amp.

The Tuba was my favorite amp of the collection with the Eikon’s, and it is now located with those Eikon’s in my secondary listening environment.

The Tuba is a relatively dry sounding Tube amp, it adds a ā€œtubeyā€ depth to the mid-range that I really enjoy and exhibits very good control across the rest of the frequency range.
Tonally in direct comparison to the SS amps, I felt it leaned out some of the lower bass from the Eikons, this was more prevalent on the Hi output than the Lo output. Though I’m back to preferring the Hi output so YMMV.
The highlights for me were the presentation of the mid-range and the generally more open sound stage it presented in comparison to the other amps.

The TLDR version is it’s a really good clean sounding tube amp on the dryer side, and I’d strongly recommend it.

And Jim if I could make one request, I know it’s trivial, but please move to using a separate switch for on/off, I find the play in the volume knob irritating every time I touch it.

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Good stuff! I usually don’t like a ā€œdry soundingā€ amp at all, but I am still interested in this.

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Focal Clears with this amp IMO is heaven…

Well great activity here! I was gone just for a few hours, went to the exotic wood store in Raleigh and found some Pao Rosa, almost bought some walnut and some Purple heart wood, but after discussion with the wood experts, the purpleheart wood after awhile will turn brown if expsosed to sunlight…my listening room has one window with blinds but I thought I would pass on the purple heart wood and went thru several others species and found this Pai Rosa with nice grain etc…

It took me about two hours, had to bring out the table saw and cut to 10 and 1/2" lengths mark and drill 8 holes to screw mount, spent 30 minutes with 180 grit and rounded all the edges. Then I have some magic wood paste / oil that I used to bring our the nice grain…you can buy this at most home supply stores. Its an easy rub on and off and it lasts several months and then you simply re-apply…the wood ā€œdrinksā€ it up wonderfully.

Wood cost me $37.50 for a piece that I could cut 3 pieces from and have a small piece to play with …I did try some tung oil gloss but too shiny for me…

Alex

NoteL: Those are some $$$ Mullards in the amp, the real deal!

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Dry, well lets call it really accurate!! LOL

I know what you mean…and totally understand…

We all have our preferences for sure…

I am looking at a pair of Aeolus but keep wondering if they will really do as well as the Clears??

Alex

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Beautiful wood paneling for your Tuba!

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Dude! That wood looks incredible! Great job there! How well does it respond to tube rolling? Do those NOS Mullards make it a bit wetter sounding, compared to the new production tubes?

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You know the entire process only took a few hours!! No blanking staining, waiting, multiple sandings etc…

Its an amazingly easy process and I have gone thru the multiple coats of various shellacs and dies etc. Such a real pain!

Thanks for the compliments! The secret here is to go look at the wood and pick out a board that has the grain you want to empasize…I went looking for Walnut, but it just didnt speak to me. The Purple Heartwood was coming home when I saw this Pao Rosa…expensive but still not that costly…

Honestly Wes, dry, wet etc…we can often pass over some really good stuff…and when I review something I try to tell it like I hear it…and yes this amp is very, very clean and accurate…but its characterics does change with the Mullard and some RCA NOS tubes…they are costlty $100 +…but to me are worth it.

When you get a really good recording and crank it up, its absolutely amazing, holographic and perfect tone…to me this is more imporant than the euphonic sound of my Crack…

There are a lot of EL84’s variants that wont break the bank as well…

Listening to Regina Spector and her Begin To Hope and the ā€œEdgeā€ song, the BASS OMG the BASS is sp blanking good way better than the Crack etc…and the overall presentation is just dang good…

So screw the ppt play and dwelling on wet or dry…its all about that outstanding presentation and experience to me…

Alex
:grinning: :grinning: :grinning: :grinning:

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Heres the magic!

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Cool! I am done with the questions, and might pick one up soon. Thanks for all the info!

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Good luck, the TUBA has a 30 day listening period…

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Here is my Purple Heart shelf, it was a MF to do as the wood is very hard.

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I’m actually nor a huge fan of Aeolus with tube amps in general.
I own both the Aeolus and Eikon’s, and I’d keep the Eikon’s if I could only have one.
Not that the Aeolus are by any means bad.
The issue I have with them is the driver makes everything sound so smooth that you lose a lot of the edge in vocals or say guitar distortion. That to me makes the entire headphone sound very flat in comparison the the Eikon’s.
As a result I prefer them on SS where I can retain as much of that ā€œedgeā€ as possible.
I still occasionally listen to them on tubes and I like them more now I can’t easily swap them out for the Eikon’s to hear what I’m missing, but I’ll be looking to replace them in the short term.

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Thanks for that information.

I had a pair of HD800s last week, had them for 2 days and sent them back and I got a Great deal…but to me even though I like my HD600’s alot. The HD800s to me were just too thin and just lacked what my brain is getting from the Clears…For two days I tried to like them…knowing what they are and capable of…but after two days the Clears went on, I smiled and the 800s went back…

So the search for the next headphone is still here!!

I know Darth really likes the Aeolus and I belive its taken over as a better headphone for him over the Clears…hmmm

Sure wish there was a ZMF try and buy, cans like these with a 25% re-stck fee is a but steep for me.

Thanks again!
Alex

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Ha!

Thats what 80 grit is for!!

:>)

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In general, selling a pair of ZMF cans that you have in-hand is both quick and easy and comes with minimal, if any, loss.

As a buyer, there are a couple of advantages to buying these things used:

  1. You know, in advance, exactly what they will look like. Which is a bigger advantage with woods with more figuring, texture or grain and contrast, but still an advantage. LTD models, in particular, don’t tend to stick around very long when they do come up for sale on the used market.

  2. No waiting … you can have them in a couple or three days, with inexpensive shipping, vs. weeks or months.

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Thanks for the info Torq!

Appreciated…

Alex

They used to make a version of this in a sandalwood scent that didn’t impart the orange hue (I believe it didn’t have any citrus oils in the formula). It was fantastic, but sadly they discontinued it.

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That’s good stuff. I use it

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I think this may be the same formula, but different scent. Works great on lighter colored woods.

Howard WC5012 Natural Wood Cleaner and Polish, 16-Ounce, Lemongrass-Lime https://www.amazon.com/dp/B0043WG2L2/ref=cm_sw_r_cp_tai_hzcAEbQ7NTHAB